Impulse 8203 User Manual - Manual (Page 10)

© Sealevel Systems, Inc. - 8 - SeaLINK PIO-48 User Manual
Electrical Characteristics
The SeaLINK PIO-48 uses 74ABT245 octal bi-directional transceivers to provide
TTL input/output capabilities. Each bit is pulled to +5V through a 10K ohm pull-up
resistor to insure each bit is at a known state when not driven.
Specifications
Inputs
Logic High: Min 2VDC
Logic Low: Max 0.8VDC
Outputs
Logic High: Min 2VDC @ 32 mA
Logic Low : Max 0.5VDC @ 64 mA
Temperature Range
Operating: 0°C – 70°C
Storage: -50°C – 105°C
Power Requirements
5VDC @ 400mA (no load); +5VDC @ 2.4A (Max)